Fetching the project from archives (most of the time, just a git clone, but you have to find it), re-familiarizing with the project build process (do I need to

Fetching the project from archives (most of the time, just a git clone, but you have to find it), re-familiarizing with the project build process (do I need to fetch some assets that are not in git?), Xcode updating the project and breaking everything, having a gazillion of deprecated warning, code signing certificate have to be re-issued, the SDK you had is not available anymore so you have to update the APIs... It can quickly take a day, a week... depending on the App.